The Canon store has refurbished copies of the EF 200-400mm f/4L IS 1.4x for $7919, that's a 10% savings off the regular refurbished price. The lens currently retails for $10,999 at B&H Photo. If you were on the fence, now's the time to act.
Canon EF 200-400mm f/4L IS 1.4x $7919 Refurbished (Reg $10999)
Refurbished lenses carry the same 1 year Canon USA warranty.